855506269 has 2 divisors, whose sum is σ = 855506270. Its totient is φ = 855506268.

The previous prime is 855506263. The next prime is 855506329. The reversal of 855506269 is 962605558.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 827310169 + 28196100 = 28763^2 + 5310^2 .

It is a cyclic number.

It is not a de Polignac number, because 855506269 - 2³ = 855506261 is a prime.

It is a super-2 number, since 2×855506269² = 1463781952596600722, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (855506261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 427753134 + 427753135.

It is an arithmetic number, because the mean of its divisors is an integer number (427753135).

Almost surely, 2^855506269 is an apocalyptic number.

It is an amenable number.

855506269 is a deficient number, since it is larger than the sum of its proper divisors (1).

855506269 is an equidigital number, since it uses as much as digits as its factorization.

855506269 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648000, while the sum is 46.

The square root of 855506269 is about 29249.0387705306. The cubic root of 855506269 is about 949.3092925802.

It can be divided in two parts, 85550 and 6269, that added together give a palindrome (91819).

The spelling of 855506269 in words is "eight hundred fifty-five million, five hundred six thousand, two hundred sixty-nine".